SBR system Articles
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Project - Wickford Junction
Wickford Junction sits atop a gravel aquifer recharge zone. A Walden SBR system was chosen to treat the wastewater flow from a proposed shopping center in order to remove contaminants prior to discharge to a disposal field. The shopping center was to be built in phases and the developer wanted the flexibility to incrementally add treatment capacity as additional store fronts were added. ...
By Walden, Inc.
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Acrylic wastewater treatment using SBR technology with aerobic granules
The acrylic or acrylonitrile wastewater treatment were investigated in experimental SBR systems with aerobic granules. The results showed that the diluted acrylic wastewater 400-800 mgL-1 could finally reach a COD removal 71.5-77.5% and a net COD removal 50.5-59.6%. The growth of aerobic granules in reactor was quite slow and retained MLSS 4.6-6.2 gL-1. The pretreatment by internal electrolysis ...
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ISAM Sequencing batch reactor for 30,000 Gallons per day - Case study
The government of the Cayman Islands centralized their offices in one large building. The occupancy of this new building will be nearly 1000 employees. As the building was not located close to a sewer network, it required its own treatment plant. H2FLOW EQUIPMENT INC. supplied an ISAM SBR system designed to provide the performance required. The system features an integral sludge ...
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New dimensiong guideline and standard for the activated sludge process
Since June 2016 a new standard for the design of activated sludge systems is valid. The most significant point is the change of the basic value from BOD to COD. The standard is also the basis for designing SBR-systems. The article discusses main aspects of the new design basis and how AQUA DESIGNER has been modified and adapted to this. In AQUA DESIGNER you can calculate the continuous and ...
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SBR system treats remote Hydro-Québec worker
By favouring hydroelectricity, a source of renewable energy, Hydro-Québec meets the needs of the present, while making sure it preserves Québec’s environmental heritage and the energy supply of future generations. The La Romaine hydropower complex is the largest infrastructure project underway in Canada. Located about 55 km from Havre-Saint-Pierre, over 2,000 workers are ...
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Using a continuous-fill, intermittent-discharge SBR to remove biological nutrients
Five years ago, the Town of Essex, in southwestern Ontario, decided to upgrade its facultative lagoon treatment systems with an alternative wastewater treatment plant — a continuous-fill, intermittent-discharge sequencing batch reactor (CFID-SBR) system, targeting even higher effluent quality. The CFID SBR process was designed by Premier Tech Aqua, which also provided major process ...
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Uncertainty and variability in enhanced biological phosphorus removal (EBPR) stoichiometry: consequences for process modelling and optimization
The overall potential for enhanced biological phosphorus removal (EBPR) in the activated sludge process is constrained by the availability of volatile fatty acids (VFAs). The efficiency with which polyphosphate accumulating organisms (PAOs) use these VFAs for P-removal, however, is determined by the stoichiometric ratios governing their anaerobic and aerobic metabolism. While changes in anaerobic ...
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Effect of chloride concentration on nitrogen removal from landfill leachate in sequencing batch reactor after MAP pretreatment
Leachate generated from landfill is becoming a great environmental challenge to China as it contains high concentration of COD, ammonium and some other substances. Nitrogen removal through the conventional nitrification-denitrification process is hampered by the low C/N ratio especially for the old age landfill sites and the high energy consumption for aeration. In this study, the combination of ...
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SBR Package system
Québec has important water resources. Hydro-Québec, a leader in the field of sustainable development, exploits and develops this collective heritage while respecting the environment. By favouring hydroelectricity, a source of renewable energy, Hydro-Québec meets the needs of the present while making sure it preserves Québec’s environmental heritage and the energy ...
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Ammonium reduction from piggery wastewater using immobilized ammonium-reducing bacteria with a full-scale sequencing batch reactor on farm
This work aims to evaluate the efficiency of ammonium removal from piggery wastewater by an intermittent aeration (IA) sequencing batch reactor (SBR) with immobilized NH4+-reducing bacteria under mesophilic conditions. When a 20-L bench-scale SBR with 11% (v/v) of alginate beads containing NH4+-reducing bacteria was used, removal efficiency of NH4+ was 63% ...
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ISAM Sequencing Batch Reactor 130 m3/day - Case study
This project was incorporated as part of a new housing development and the effluent is discharged to a subsurface tile bed. The plant is now operated by the Ontario Clean Water Agency. H2FLOW EQUIPMENT INC. supplied a complete package with a PARKSON HELISIEVE 6mm fine screw screen unit followed by a FLUIDYNE ISAM SBR system, and PARKSON DYNASAND tertiary filtration. System Process Startup was ...
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Denitrification processes and microbial communities in a sequencing batch reactor treating nanofiltration (NF) concentrate from coking wastewater
A biological denitrifying process was employed for the treatment of nanofiltration (NF) concentrate with high conductivity, which was generated from coking wastewater in a sequencing batch reactor (SBR). The results showed that the average removal efficiencies of chemical oxygen demand (COD), total nitrogen (TN) and nitrate were 47.6%, 61.1% and 94.6%, respectively. Different microbial ...
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Potential of nitrous oxide recovery from an aerobic/oxic/anoxic SBR process
A single sequencing batch reactor (SBR) with an operating mode of anaerobic/oxic/anoxic (A/O/A) was developed to determine a simpler process to recover nitrous oxide (N2O) from synthetic wastewater containing ammonia and glucose. This SBR system was initiated in A/O mode to implement nitritation (ammonia to nitrite) and then switched to A/O/A mode. Using measurements of the dissolved N2O ...
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Evaluation of an integrated anaerobic/aerobic SBR system for the treatment of wool dyeing effluents
This work examined the performance of a sequencing batch reactor treating dyeing effluents from a factory that processes mainly wool and wool/polyester blends. Different operational conditions were evaluated, namely the influence of the anaerobic and the subsequent aerobic phase on the organic load removal, as well as the effect of the length of the aeration period (from 8 to 12h) on process ...
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Process evaluation of an alternating aerobic-anoxic process applied in a sequencing batch reactor for nitrogen removal
In order to improve the nitrogen removal efficiency and save operational cost, the feasibility of the alternating aerobic-anoxic process (AAA process) applied in a sequencing batch reactor (SBR) system for nitrogen removal was investigated. Under sufficient influent alkalinity, the AAA process did not have an advantage over one aerobicanoxic (OAA) cycle on treatment efficiency because ...
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Shock load response in an SBR-activated sludge process treating high load wastewater
In this study, the production of storage polymers is made when cheese production wastewater is treated. Cheese plants typically produce high-strength wastewaters on an intermittent basis and are particularly suitable for treatment in Sequencing Batch Reactor (SBR) systems. The SBRs were operated in triplicate under two filling scenarios: 'React Fill' (RF) with mixing/aeration; 'Static Fill' (SF) ...
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Using Air Strippers for Off-gas Treatment - Case Study
Two pharmaceutical plants in Puerto Rico used large sequencing batch reactor (SBR) systems to treat their wastewater. The primary treatment was an aerobic bio breakdown of the waste. The were forced to change their treament process because of change in treatment regulations. The new regulations required them to treat off-gas that was coming from the SBRs. They were faced with installing a very ...
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ISAM Sequencing batch Reactor375 m3/day - Case study
This project was incorporated as part of an existing municipal treatment plant expansion, and the effluent is discharged to a nearby surface water stream. The plant is now operated by the Ontario Clean Water Agency. H2FLOW EQUIPMENT INC. supplied a complete package with a PARKSON 6mm fine screw screen unit followed by a FLUIDYNE ISAM SBR system including blowers, and a TROJAN UV3000 PTP ...
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Low temperature biological phosphorus removal and partial nitrification in a pilot sequencing batch reactor system
Partial nitrification and biological phosphorus removal appear to hold promise of a cost-effective and sustainable biological nutrient removal process. Pilot sequencing batch reactors (SBRs) were operated under anaerobic/aerobic configuration for 8 months. It was found that biological phosphorus removal can be achieved in an SBR system, along with the partial nitrification process. Sufficient ...
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Case Study: Wastewater Level Monitoring in SBR Tanks
Level sensors are critical in controlling sequencing batch reactor (SBR) systems, monitoring liquid levels in the basins and helping to control pumps that move wastewater through the system. A municipal wastewater treatment plant (WWTP) was experiencing issues with its existing level sensors. Due to a challenging environment, surface conditions and obstructions, the level sensors produced ...
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